AutoAdminLogon

Vista Registry Editor - AutoAdminLogon

The idea behind AutoAdminLogon is that a user(name) can logon at a computer without having to type a password. A typical scenario would be a test machine on a private network. With AutoAdminLogon enabled, when you restart the machine it automatically logs on a named user. The trick, which also its liability, is to set a value for DefaultPassword in the registry.

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Instructions for Setting AutoAdminLogon

1. Launch Regedit. (See more details on starting regedit)
2. Navigate to:
   HKLM\Software\Microsoft\Windows NT\CurrentVersion\winlogon
   Set: AutoAdminLogon = 1 (one means on, zero means off)
3. Tip: Try Regedit's 'Find': AutoAdminLogon
4. Create a new String Value called DefaultPassword
   Set: DefaultPassword = "P@ssw0rd"
5. Check for the existence of a REG_SZ called DefaultUserName. The value should reflect the user who you wish to logon automatically. If this value does not exist, then right-click in the right pane, New, REG_SZ, name it, DefaultUserName. Set the string value to the required UserName.
6. Optional Item: If your Vista Machine has joined a domain, then create a String Value called DefaultDomainName.
   Set: DefaultDomainName = "OnlyYouKnowDomain"

Here is a summary of the four key registry settings:

"AutoAdminLogon"="1"
"DefaultUserName"="xxx"
"DefaultPassword"="xxxx0xxxx"
"DefaultDomainName"="xxx.xxx". Definitely needed in a domain situation.

http://www.computerperformance.co.uk/vista/vista_registry_autoadminlogon.htm